A viewing system and method comprises an extracting device, a spatial enhancement device, and a display device. The extracting device (1) extracts features related to an object of interest in images of a sequence. The spatial enhancement device (2) includes a ridge filter modulated by factor to enhance the object of interest to the exclusion of background objects. The display device (54) displays the processed images (15, 45) of the enhanced registered object of interest on a faded background.